GETUSERSHELL(3) OpenBSD Programmer's Manual GETUSERSHELL(3)
NAMEgetusershell, setusershell, endusershell - get legal user shells
SYNOPSIS#include <unistd.h>char *getusershell(void);
voidsetusershell(void);
voidendusershell(void);
DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as
defined by the system manager in the file /etc/shells. If /etc/shells is
unreadable or does not exist, getusershell() behaves as if only /bin/sh
and /bin/csh were listed in the file.
The getusershell() function reads the next line (opening the file if nec-
essary); setusershell() rewinds the file; endusershell() closes it.
FILES
/etc/shells
DIAGNOSTICS
The routine getusershell() returns a null pointer EOF.
SEE ALSOshells(5)HISTORY
The getusershell() function appeared in 4.3BSD.
BUGS
The getusershell() function leaves its result in an internal static ob-
ject and returns a pointer to that object. Subsequent calls to
getusershell() will modify the same object.
OpenBSD 2.6 June 4, 1993 1